CHALLENGE 543-HT

Lapping/Polishing Slurry Additives for Suspending Non-Treated Abrasive

CHALLENGE 543-HT is a medium viscosity lapping/polishing slurry additive which evenly disperses and suspends a variety of non-suspension-treated abrasives, including aluminum oxide, zirconium oxide, along with silicon carbide, boron carbide, synthetic and natural diamond, and garnet.

Because of its superior suspension characteristics, CHALLENGE 543-HT reduces the amount of abrasive grain needed by up to 50%, while providing equal, and often greater, stock removal rates. 543-HT is particularly effective when using equipment with smaller slurry feed tubes, which constrict flow of high viscosity products.

Directions

CHALLENGE 543-HT should be mixed with deionized water and abrasive using the following slurry formula: 77-82% water,15-18% abrasive, 3-5% CHALLENGE 543-HT.
Use an agitator with a marine type propeller and a motor capable of 1750 RPM.
Use a low shear dispense pump for feeding the mixed slurry onto the lap.
Disperse the abrasive with DI water at 1000 rpm for 3 minutes.
Add 543-HT. Mix for approximately 10 minutes depending upon abrasive surface chemistry. Be careful not
to suck air into the slurry when mixing.
A small vortex should form at the surface of the
slurry. Turn the mixer off, or to a maximum of 50 rpm.

For more detailed directions, request document #DOC-DIR-543HT.

Additional Information

CHALLENGE Products are available in 5-gallon pails and 55-gallon drums, F.O.B. Bethel, Connecticut, and also include: grinding fluids, sawing fluids, rinse/wash agents and ultrasonic/megasonic detergents. Material Safety Data Sheets available upon request.